An Iraqi soldier stands guard outside the Al-Saadiq Air Base near the town of Tuz Khurmatu in the northern Salaheddin province on September 8, 2010, a day after an Iraqi soldier, Soran Rahman Saleh Wali, gunned down two American soldiers and wounded nineothers who were visiting the base after an argument erupted.

Some form of U.S. military presence will be needed in Iraq at least until 2016 to provide training, support and maintenance for the vast quantity of military equipment and weaponry that Iraq is buying from the United States, Iraqi Defense Minister Abdul-Qadir al-Ubaidi said.

In addition, Iraq will also continue to need help with intelligence gathering after 2011, and the fledgling Iraqi air force will require U.S. assistance at least until 2020, the date by which Iraq aims to achieve the capability to defend its own airspace, al-Ubaidi said.

The comments were made in an interview a week after President Obama declared the end of U.S. combat operations and reaffirmed America's commitment to pull out all its troops by the end of 2011, under the terms of a security agreement reached by the Bush administration and the Iraqi government in 2008.

"Maybe endlessly," al-Ubaidi said when asked how long U.S. support may be necessary. "As long as I have an army and I'm a Third World country, and I can't pretend that I'm better than that ... I will need assistance.

"I don't think any reasonable person would reject any kind of help from the U.S. and the European nations," he added. Iraq has an agreement with Britain to help train its navy and patrol its waters that expires in November.

Al-Ubaidi, who is regarded as a close ally of Prime Minister Nouri al-Maliki, stopped short of calling for the continuation of U.S. bases in Iraq beyond the December 31, 2011, deadline for withdrawal of all troops. At this point, 50,000 U.S. troops remain in Iraq to advise and assist Iraqi forces. The form of any future presence will be up to the next Iraqi government to decide, in negotiations with Washington, al-Ubaidi said.

But it is becoming increasingly clear that many in Iraq's defense establishment, as well as within the U.S. military, believe that Iraq's security forces will need U.S. military assistance for many years to come, despite Obama's commitment to pull out all troops by 2012.

In an interview last month, the chief of staff of the Iraqi armed forces, Gen. Babakir Zebari, predicted the need for U.S. forces to remain in Iraq until 2020 and said he would like to see the United States maintain "three or four bases" to help deter possible threats from Iraq's neighbors. U.S. officials have also said Iraq's army will need assistance beyond the 2011 deadline.

Iraq has ordered or requested more than $13 billion worth of U.S. arms, as well as a shipment of 18 F-16s, which aren't expected to arrive at least until 2013 even if the order receives swift congressional approval.

"It's inevitable," al-Ubaidi said. "We have equipment such as tanks, aircraft, naval equipment, and it's all coming from the United States. They won't be fully ready until 2016, so how are we going to train on them? By mail? We will need the help of specialists and experts and trainers, and those people are going to need life support and force protection."

Otherwise, he added, "all the expenses I paid for ... will be in vain."